oj.uz

Submission #1007277

# Submission time Handle Problem Language Result Execution time Memory
1007277 2024-06-24T14:32:01 Z Amr Longest Trip (IOI23_longesttrip) C++17
85 / 100
 21 ms 600 KB 
#include "longesttrip.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define F first
#define S second
#define sz size()
#define all(x) (x).begin(), (x).end()
vector<int> v1,v2;
vector<int> go(ll x, ll y)
{
    if(x) reverse(all(v1));
    if(y) reverse(all(v2));
    for(int i = 0; i < v2.sz; i++) v1.push_back(v2[i]);
    return v1;
}
std::vector<int> longest_trip(int N, int D)
{
    vector<ll> sh;
    for(int i = 0; i < N; i++) sh.push_back(i);
    std::random_device rd;
    std::mt19937 g(rd());
    std::shuffle(all(sh), g);
    mt19937 rnd(time(0));
    v1.clear(); v2.clear();
    v1.push_back(sh[0]);
    for(int ii = 1; ii < N; ii++)
    {
        int i = sh[ii];
        ll j = rnd()%2;
        if(j) swap(v1,v2);
        bool bo = 0;
        if(v1.sz)
        bo = are_connected({v1.back()},{i});
        if(bo==1) v1.push_back(i);
        else
        {
            if(v2.sz==0) v2.push_back(i);
            else
            {
                bo = are_connected({v2.back()},{i});
                if(bo==1) v2.push_back(i);
                else
                {
                    reverse(all(v2));
                    for(int j = 0; j < v2.sz; j++) v1.push_back(v2[j]); v2.clear();
                    v2.push_back(i);
                }
            }
        }


    }
    if(v2.sz==0) return v1;
    if(v1.sz==0) return v2;
    //if(v1.sz>v2.sz) return v1; else return v2;
    bool b1 = are_connected({v1[0]},{v2[0]});
    bool b2 = are_connected({v1[0]},{v2.back()});
    bool b3 = are_connected({v1.back()},{v2[0]});
    bool b4 = are_connected({v1.back()},{v2.back()});

    if(b1)
    {
        return go(1,0);
    }
    else if(b2)
    {
        return go(1,1);
    }
    else if(b3)
    {
        return go(0,0);
    }
    else if(b4)
    {
        return go(0,1);
    }
    // not connecteed
    bool both = are_connected(v1,v2);
    if(both==0)
    {
        if(v1.sz>v2.sz) return v1; else return v2;
    }
    // connected
    ll l = 0, r = v1.sz-1;
    while(l<r)
    {
        ll mid = (l+r)/2;
        vector<int> vv;
        for(int i = l; i <= mid; i++) vv.push_back(v1[i]);
        bool m = are_connected(vv,v2);
        if(m) r = mid; else l = mid+1;
    }
    ll node1 = l;
    l = 0, r = v2.sz-1;
    while(l<r)
    {
        ll mid = (l+r)/2;
        vector<int> vv;
        for(int i = l; i <= mid; i++) vv.push_back(v2[i]);
        bool m = are_connected(vv,{v1[node1]});
        if(m) r = mid; else l = mid+1;
    }
    ll node2 = l;
    vector<int> ans;
    for(int i = node1+1; i < v1.sz; i++) ans.push_back(v1[i]);
    for(int i = 0; i <= node1; i++) ans.push_back(v1[i]);
    for(int i = node2; i < v2.sz; i++) ans.push_back(v2[i]);
    for(int i = 0; i < node2; i++) ans.push_back(v2[i]);
    return ans;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> go(ll, ll)':
longesttrip.cpp:15:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(int i = 0; i < v2.sz; i++) v1.push_back(v2[i]);
      |                      ^
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:47:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |                     for(int j = 0; j < v2.sz; j++) v1.push_back(v2[j]); v2.clear();
      |                                      ^
longesttrip.cpp:47:21: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   47 |                     for(int j = 0; j < v2.sz; j++) v1.push_back(v2[j]); v2.clear();
      |                     ^~~
longesttrip.cpp:47:73: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   47 |                     for(int j = 0; j < v2.sz; j++) v1.push_back(v2[j]); v2.clear();
      |                                                                         ^~
longesttrip.cpp:107:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |     for(int i = node1+1; i < v1.sz; i++) ans.push_back(v1[i]);
      |                            ^
longesttrip.cpp:109:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  109 |     for(int i = node2; i < v2.sz; i++) ans.push_back(v2[i]);
      |                          ^

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 452 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 3 ms 344 KB Output is correct
5 Correct 6 ms 452 KB Output is correct
6 Correct 11 ms 344 KB Output is correct
7 Correct 7 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 3 ms 344 KB Output is correct
11 Correct 4 ms 452 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 340 KB Output is correct
6 Correct 12 ms 344 KB Output is correct
7 Correct 7 ms 344 KB Output is correct
8 Correct 5 ms 448 KB Output is correct
9 Correct 7 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 16 ms 344 KB Output is correct
15 Correct 12 ms 344 KB Output is correct
16 Correct 8 ms 344 KB Output is correct
17 Correct 7 ms 344 KB Output is correct
18 Correct 8 ms 344 KB Output is correct
19 Correct 7 ms 344 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 6 ms 344 KB Output is correct
22 Correct 5 ms 452 KB Output is correct
23 Correct 4 ms 344 KB Output is correct
24 Correct 5 ms 456 KB Output is correct
25 Correct 12 ms 344 KB Output is correct
26 Correct 20 ms 344 KB Output is correct
27 Correct 10 ms 344 KB Output is correct
28 Correct 11 ms 344 KB Output is correct
29 Correct 9 ms 344 KB Output is correct
30 Correct 6 ms 344 KB Output is correct
31 Correct 8 ms 444 KB Output is correct
32 Correct 8 ms 344 KB Output is correct
33 Correct 8 ms 344 KB Output is correct
34 Correct 10 ms 344 KB Output is correct
35 Correct 7 ms 344 KB Output is correct
36 Correct 6 ms 344 KB Output is correct
37 Correct 11 ms 344 KB Output is correct
38 Correct 9 ms 344 KB Output is correct
39 Correct 9 ms 344 KB Output is correct
40 Correct 11 ms 344 KB Output is correct
41 Correct 8 ms 344 KB Output is correct
42 Correct 6 ms 344 KB Output is correct
43 Correct 5 ms 344 KB Output is correct
44 Correct 8 ms 344 KB Output is correct
45 Correct 11 ms 344 KB Output is correct
46 Correct 14 ms 344 KB Output is correct
47 Correct 12 ms 344 KB Output is correct
48 Correct 10 ms 344 KB Output is correct
49 Correct 10 ms 344 KB Output is correct
50 Correct 5 ms 344 KB Output is correct
51 Correct 6 ms 344 KB Output is correct
52 Correct 13 ms 600 KB Output is correct
53 Correct 6 ms 344 KB Output is correct
54 Correct 7 ms 344 KB Output is correct
55 Correct 7 ms 340 KB Output is correct
56 Correct 9 ms 344 KB Output is correct
57 Correct 8 ms 344 KB Output is correct
58 Correct 8 ms 344 KB Output is correct
59 Correct 8 ms 344 KB Output is correct
60 Correct 9 ms 340 KB Output is correct
61 Correct 7 ms 344 KB Output is correct
62 Correct 8 ms 344 KB Output is correct
63 Correct 9 ms 600 KB Output is correct
64 Correct 9 ms 344 KB Output is correct

Subtask #4
45.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 344 KB Output is correct
2 Correct 7 ms 344 KB Output is correct
3 Correct 6 ms 408 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 16 ms 344 KB Output is correct
7 Correct 8 ms 344 KB Output is correct
8 Correct 6 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 8 ms 452 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct
14 Correct 21 ms 344 KB Output is correct
15 Correct 13 ms 344 KB Output is correct
16 Correct 7 ms 344 KB Output is correct
17 Correct 9 ms 344 KB Output is correct
18 Correct 7 ms 344 KB Output is correct
19 Correct 9 ms 344 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 11 ms 344 KB Output is correct
22 Correct 14 ms 344 KB Output is correct
23 Correct 9 ms 344 KB Output is correct
24 Correct 9 ms 344 KB Output is correct
25 Correct 12 ms 344 KB Output is correct
26 Correct 6 ms 344 KB Output is correct
27 Correct 8 ms 344 KB Output is correct
28 Correct 8 ms 344 KB Output is correct
29 Correct 9 ms 344 KB Output is correct
30 Correct 8 ms 344 KB Output is correct
31 Correct 7 ms 344 KB Output is correct
32 Correct 13 ms 344 KB Output is correct
33 Correct 12 ms 344 KB Output is correct
34 Correct 10 ms 344 KB Output is correct
35 Correct 10 ms 340 KB Output is correct
36 Correct 12 ms 344 KB Output is correct
37 Correct 8 ms 344 KB Output is correct
38 Correct 9 ms 344 KB Output is correct
39 Correct 6 ms 344 KB Output is correct
40 Correct 4 ms 344 KB Output is correct
41 Correct 8 ms 344 KB Output is correct
42 Correct 8 ms 344 KB Output is correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 4 ms 344 KB Output is correct
45 Correct 6 ms 344 KB Output is correct
46 Correct 5 ms 344 KB Output is correct
47 Correct 7 ms 344 KB Output is correct
48 Correct 10 ms 456 KB Output is correct
49 Correct 5 ms 344 KB Output is correct
50 Correct 7 ms 344 KB Output is correct
51 Partially correct 7 ms 344 KB Output is partially correct
52 Correct 11 ms 344 KB Output is correct
53 Correct 8 ms 600 KB Output is correct
54 Correct 6 ms 344 KB Output is correct
55 Correct 8 ms 344 KB Output is correct
56 Correct 5 ms 344 KB Output is correct
57 Correct 8 ms 344 KB Output is correct
58 Partially correct 8 ms 344 KB Output is partially correct
59 Partially correct 6 ms 344 KB Output is partially correct
60 Correct 10 ms 344 KB Output is correct
61 Partially correct 6 ms 456 KB Output is partially correct
62 Correct 5 ms 344 KB Output is correct
63 Correct 8 ms 344 KB Output is correct
64 Partially correct 11 ms 344 KB Output is partially correct
65 Correct 9 ms 344 KB Output is correct
66 Partially correct 8 ms 344 KB Output is partially correct
67 Partially correct 6 ms 344 KB Output is partially correct
68 Partially correct 8 ms 344 KB Output is partially correct
69 Partially correct 8 ms 344 KB Output is partially correct
70 Partially correct 8 ms 344 KB Output is partially correct
71 Partially correct 9 ms 344 KB Output is partially correct
72 Partially correct 9 ms 344 KB Output is partially correct
73 Partially correct 10 ms 448 KB Output is partially correct
74 Correct 6 ms 344 KB Output is correct
75 Correct 8 ms 452 KB Output is correct
76 Partially correct 10 ms 344 KB Output is partially correct
77 Partially correct 5 ms 344 KB Output is partially correct
78 Partially correct 10 ms 344 KB Output is partially correct
79 Correct 6 ms 344 KB Output is correct
80 Partially correct 8 ms 344 KB Output is partially correct
81 Partially correct 5 ms 344 KB Output is partially correct
82 Partially correct 9 ms 344 KB Output is partially correct